GuruGo uses light and sound to train your brain into reaching more productive states
Contrary to popular belief, brain training wasn't first developed through the Dr Kawashima's series for the Nintendo DS back in 2005. No - the concept of brain entrainment, and testing the different planes the brain operates at, was first recorded back in 1665, by Dutch physicist Christiaan Huygens. And, really, the wavelengths of our mind…